PANGAEA_986813 Radiocarbon ages for marine sediment cores CDH-5 and GGC-4 under the influence of Amazon Basin discharge Grigolato, Júlia; Chiessi, Cristiano Mazur; Bertassoli Junior, Dailson José; de Carvalho Campos, Marília; Shimizu, Marilia Harumi; Magalhães, Renê Hamada; Nace, Trevor; Sawakuchi, André Oliveira; Wahnfried, Ingo Daniel; Neri, Rafael; Cunha, Alan Cavalcanti; Cleverson, Silva G; Baker, Paul A; Govin, Aline; Zabel, Matthias Radiocarbon ages for marine sediment cores CDH-5 and GGC-4 under the influence of Amazon Basin discharge 2025-10-29 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.986813 Investigator Júlia Grigolato Earth Science Event label Latitude of event Longitude of event Date/Time of event Core Laboratory code/label DEPTH, sediment/rock Age, dated Age, dated, error geoscientificInformation Amazon Basin Gravity corer KNR197-4 KNR197-4-4GGC KNR197-4-5CDH Marine cores Piston corer Radiocarbon XRF see abstract Knorr 2010-02-23 2010-02-23 Complete 4.45 4.45 -48.6 -48.6 0.06 m (DEPTH, sediment/rock) 31.91 m (DEPTH, sediment/rock) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 144 data points text/tab-separated-values Grigolato, Júlia; Chiessi, Cristiano Mazur; Bertassoli, Dailson J Jr; Campos, Marília C; Shimizu, Marília H; Magalhães, Renê Hamada; Nace, Trevor; Sawakuchi, André Oliveira; Wahnfried, Ingo Daniel; Neri, Rafael; Cunha, Alan Cavalcanti; Silva, Cleverson Guizan; Baker, Paul A; Govin, Aline; Zabel, Matthias (2025): Past Amazon precipitation under different Atlantic Meridional Overturning Circulation and sea surface temperature scenarios of the last deglaciation. Quaternary Science Reviews, 362, 109425, https://doi.org/10.1016/j.quascirev.2025.109425

Here we present radiocarbon from two marine sediment cores (CDH-5 and GGC-4) located in the western equatorial Atlantic, off the coast of the Amazon River mouth, along the path of the North Brazil Current, where Amazon-derived sediments accumulated. Radiocarbon data were obtained using radiocarbon ages of planktonic foraminifera, which were analyzed using accelerator mass spectrometry at the Woods Hole Oceanographic Institution (USA) and the Beta Analytic Laboratory (USA). All work was done at Beta in 4 in-house NEC accelerator mass spectrometers and 4 Thermo IRMSs. The "Conventional Radiocarbon Age" was calculated using the Libby half -life (5568 years), is corrected for total isotopic fraction and was used for calendar calibration where applicable. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.986813"!

https://doi.org/10.1016/j.quascirev.2025.109425 Past Amazon precipitation under different Atlantic Meridional Overturning Circulation and sea surface temperature scenarios of the last deglaciation DIF 9.4 2025-10-29 2026-04-29